Singh RP, Reddy YN. A Fitted Second Order Special Finite Difference Method for Singularly Perturbed Differential- Difference Equations Exhibiting Dual Layers. Jour. Inform. Math. Sci. [Internet]. 2020 Sep. 30 [cited 2025 Jun. 20];12(3):223-32. Available from: http://www.journals.rgnpublications.com/index.php/jims/article/view/1430